Troubleshooting
8
Problem
Cause
Remedy
Engine Fails to start | 1. | Blade control disengaged. | 1. | Engage blade control. |
| 2. | Spark plug boot disconnected. | 2. | Connect wire to spark boot. |
| 3. | Fuel tank empty or stale fuel. | 3. | Fill tank with clean, fresh gasoline. |
| 4. | Engine not primed (if equipped with primer). | 4. | Prime engine as instructed in the Operation |
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| 5. | Faulty spark plug. | 5. | Clean, adjust gap, or replace. |
| 6. | Blocked fuel line. | 6. | Clean fuel line. |
| 7. | Engine flooded. | 7. | Wait a few minutes to restart, but do not |
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| prime. |
| 8. | Fuel valve (if equipped) closed. | 8. | Open fuel valve. See engine manual. |
| 9. | Engine not choked (if equipped with choke). | 9. | Choke engine. See engine manual. |
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Engine runs erratic | 1. | Spark plug boot loose. | 1. | Connect and tighten spark plug boot. |
| 2. | Blocked fuel line or stale fuel. | 2. | Clean fuel line; fill tank with clean, fresh |
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| gasoline. |
| 3. | Vent in gas cap plugged. | 3. | Clear vent. |
| 4. | Water or dirt in fuel system. | 4. | Drain fuel tank. Refill with fresh fuel. |
| 5. | Dirty air cleaner. | 5. | Refer to engine manual. |
| 6. | Unit running with CHOKE (if equipped) | 6. | Push CHOKE knob in. |
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Engine overheats | 1. | Engine oil level low. | 1. | Fill crankcase with proper oil. |
| 2. | Air flow restricted. | 2. | Clean area around and on top of engine. |
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Occasional skips | 1. | Spark plug gap too close. | 1. | Adjust gap to .030”. |
(hesitates) at |
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high speed |
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Idles poorly | 1. | Spark plug fouled, faulty, or gap too wide. | 1. | Reset gap to .030” or replace spark plug. |
| 2. | Dirty air cleaner. | 2. | Refer to engine manual. |
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Excessive Vibration | 1. | Cutting blade loose or unbalanced. | 1. | Tighten blade and adapter. Balance blade. |
| 2. | Bent cutting blade. | 2. | See an authorized service dealer. |
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Mower will not | 1. | Wet grass. | 1. | Do not mow when grass is wet; wait until |
mulch grass |
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| later to cut. |
| 2. | Excessively high grass. | 2. | Mow once at a high cutting height, then |
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| mow again at desired height or make a |
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| narrower cutting path. |
| 3. | Dull blade. | 3. | Sharpen or replace blade. |
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Uneven cut | 1. | Wheels not positioned correctly. | 1. | Place all four wheels in same height position |
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| (if equipped with individual height adjusters). |
| 2. | Dull blade. | 2. | Sharpen or replace blade. |
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